Explain why crops in the Arctic grow larger than normal during the summer months.

Urey and Miller's experimental setup was able to produce all twenty of the amino acids found in proteins. Some amino acids contain the element oxygen. Which starting material in the Urey-Miller experiment was the source of this element?

A bright star what have a negative number for its absolute magnitude

Technological advances in microbiology are providing evidence which indicates: a.) biological cells are very simple b.) cells and microorganisms are extremely complex c.) evolution of life is possible d.

Which describes a trait from a recessive gene? A) It causes a mutation. B) It masks a dominant gene trait. C) It can appear if it is heterozygous. D) It usually appears only if it is homozygous.

What type of plants were abundant during the Cenozoic? Question 2 options: 1. mosses 2. lichens 3. seeded plants 4. ferns

The front leg of an iguana and the wing of a bird look different, but both limbs likely originated from a similar limb in a shared ancestor. Structures such as these are said to be A) heterogeneous B) differentiated C) vestigial D) homologous

What's the genotype of human female

Fluid filled sacs found between the skin and underlying bony prominences are called

Trees, such as those in the deciduous forest, are very important to the environment. If the number of trees on earth continues to decrease significantly, what might be the result?

List two reasons why amphibians must live in moist environment.